ON LARD, AND COMPOUNDS MADE WITH IT. iOv> 



youns; shoots : the best remefly against which 13 to corer 

 with dry sea-coal ashes, sifted neither very small nor very 

 large ; salt also e^ ectually destroys them, and will not in- 

 jure the Sea Kate, The crop will be ready to gather in three 

 weeks or a month from first applying the heat, but so much 

 mischief ensues when this is violent, that I would advise 

 every one to begin time enough, and force slowly, rathei* 

 than quickly. It is also necessary to cut the leaves off a foi-t- 

 night or three weeks before they decay, from such plants as 

 you intend to force very early. 



VL 



On Grease, and some Medicinal Compounds, of which it is 

 the Basis: by H. A. Vogkl, Chemical Operator in the 

 Pharmaceutic School at Paris, Abridged bi/ Bouillon- 

 Lagrange*. 



R. Vogel, not having an opportunity of instituting a Lard. 

 comparative examination of the soit fat of various animals, 

 confined himself to hog's lard, the most common, and of 

 most extensive use. 



Lurd, exposed for two months to the rays of the sun, Effects of lii^ht 

 without access of air, acquires a very pungent rancid smell, ^" ^*" 

 an acrid taste that affects the throat a long time, and a yel- 

 loAv colour, but no acidity. By the, joint action of light Of atr. 

 and air the same phenomena take place, and in addition it 

 becomes acid. . 



It melts at 104° or 108® F,, and remains in fusion at this Ofciiloiic. 

 temperature without being decomposed ; but above '21^2^ der 

 compos ton commences. If it iiave been well washed, it 

 allords no traces of ammonia on distillation. 



Mixed With half its weiLiht of washed flowers of sulphur, Dissolves sul- 

 forrajng what is commonly called sulphur pomatum, and P^^ur. 

 examined four days after, as well as when kept much longer, 

 no trace of sulphuric acid vtas discoverable. By gentle fu» 



* Abridged from the Annates de Chiniie, Vol. LVIII, p. 154, May, 

 1800. 



sion 



